Apply updates from cookiecutter (#40)

This automated commit applies the latest updates from our cookiecutters [1] to
this repo.

[1]: https://github.com/hypothesis/cookiecutters

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

.gitignore

@@ -11,3 +11,4 @@ supervisord.pid
 .DS_Store
 .devdata*
 .eslintcache
+*.tsbuildinfo